Segregation of granular materials composed of different-sized particles has important repercussions in various industrial processes and natural phenomena, but predicting size segregation remains a challenging problem. To address this problem, we have developed a theoretical model that captures the interplay between advection, segregation, and diffusion in size bidisperse granular materials. The...

A study of occupational race and sex segregation was performed on time series, census data from 1940 to 2000. Modernization / neoclassic economic theories and institutional / queuing theories were tested in the analyses. Modernization theory suggests that over time, occupational segregation will decrease, while institutional/queue theory suggests segregation will not decline due to rigidities a...

There are two sources of quantitative data on grain boundary segregation: careful experimental results and calculated data. These values can be compared in various ways. Here we show a comparison average concentrations silicon, vanadium, tin at the boundaries bcc iron determined three ways: (i) basis calculations segregation energy for individual sites; (ii) experimentally; (iii) using phenomen...

the application of ai-li alloy in aerospace and aircrafts industries have a promising future due to its lower density and a comparatible mechanical properties to the other aluminum alloys. the major problems encountered with parts made of al-li alloys, include segregation and brittleness. the presence of a precipitation free zone (pfz) and also the concentration of some elements such as k,na,o,...

Drawing on insights from Shannon’s (1948) seminal paper on Information Theory, we propose that all measures of segregation and inequality are united within a single conceptual framework. We argue that segregation is fundamentally analogous to the loss of information from an aggregation process. Integration is information loss and segregation is information retention. Specifying the exact theore...

Centromeric DNA is generally composed of large blocks of tandem satellite repeats that change rapidly due to loss of old arrays and expansion of new repeat classes. This extreme heterogeneity of centromeric DNA is difficult to reconcile with the conservation of the eukaryotic chromosome segregation machinery. Histone H3-like proteins, including Cid in Drosophila melanogaster, are a unique chrom...

The announcement this spring followed months of speculation: Kim Nasmyth will assume the Whitley Chair of Biochemistry at the University of Oxford at the start of 2006, taking over from Ed Southern. Nasmyth is presently Director of the Institute of Molecular Pathology (IMP) in Vienna and is well known for his work on the yeast cell cycle and chromosome segregation (for more details see Curr. Bi...

Proper chromosome segregation depends on correct attachments between microtubules and kinetochores. Budding yeast have been thought to achieve these attachments with different kinetics than other eukaryotes. Now, deploying specialized data processing techniques to achieve super-resolution images, Marco et al. demonstrate that this tractable cell-cycle model system shares more similarities with ...

BACKGROUND Neighbourhood segregation has been described as a fundamental determinant of physical health, but literature on its effect on mental health is less clear. While most previous research has relied on conceptualised measures of segregation, Northern Ireland is unique as it contains physical manifestations of segregation in the form of segregation barriers (or 'peacelines') which can be ...